1999 Buick Skylark Car suddenly stalled and continues to do so

1999 BUICK SKYLARK
48,000 MILES • 4 CYL • 2WD • AUTOMATIC
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1999 Buick Skylark mileage: 48,000. Car suddenly stalled and continues to do so. The service engine soon light is now on. I checked the code and got code 4,2...parts store won't even tell me what that indicates. Said it could be lots of things. Can you help? I thought it could be the MAP sensor or the computer.
Oct 19, 2010 at 11:22 PM
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Code 42 has to do with the electronic spark timing circuit. There are a number of things included in that starting with the knock sensor, the ignition coil, the pick-up coil and the ignition module. One or more of these may be faulty. Being a mechanic is never easy. Sometimes you just need to practice the old trial and error method.
Oct 19, 2010 at 11:24 PM